Will the new OTA update for RAZR M relock my boot loader and result in loss of root?

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Just got a RAZR M and finally was able to unlock the boot loader and root the phone with Motopocalypse and Droid RAZR M Util 1.20. Recently I heard that the next RAZR M factory update will have an impenetrable boot loader and be unrootable. I am now being pestered to install an update which I assume is this impenetrable one. If I accept this update will I lose root and be unable to reestablish access or will my root access be unaffected? If it will destroy my root capabilities, how do I stop the update pushes? Thanks to anyone in advance who can help with this.
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